Río Negro Formation

Geology

Members: unnamed (6), capa d (1)

Lithologies: not reported (6), sandstone (1)

Paleoenvironments: terrestrial indet. (5), "floodplain" (2)

Age range: base of the Chasicoan to the top of the Huayquerian or 10.00000 to 5.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Chasicoan10.0 - 8.0Argentina (La Pampa) (230709)
Huayquerian8.0 - 5.0Argentina (La Pampa) (211564)
Huayquerian8.0 - 5.0Argentina (Rio Negro) (145813 206216 206561 206564 212301)